chrome: Cleanup class/struct forward declarations

chrome/browser/supervised_user/supervised_user_content_provider_android.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_CONTENT_PROVIDER_ANDROID_H_
 #define CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_CONTENT_PROVIDER_ANDROID_H_
 
 #include <jni.h>
 #include "base/android/scoped_java_ref.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/supervised_user/supervised_user_url_filter.h"
 #include "components/supervised_user_error_page/supervised_user_error_page.h"
 
-class SupervisedUserService;
+class Profile;
 
 class SupervisedUserContentProvider {
  public:
   SupervisedUserContentProvider(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& caller);
   virtual ~SupervisedUserContentProvider();
 
   void ShouldProceed(
       JNIEnv* env,
@@ skipping 21 matching lines @@
       bool sent_ok);
   Profile* profile_;
   base::android::ScopedJavaGlobalRef<jobject> java_content_provider_;
 
   base::WeakPtrFactory<SupervisedUserContentProvider> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserContentProvider);
 };
 
 #endif  // CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_CONTENT_PROVIDER_ANDROID_H_